SIST EN 50264-2:2003
(Main)Railway applications - Railway rolling stock cables having special fire performance - Standard wall -- Part 2: Single core cables
Railway applications - Railway rolling stock cables having special fire performance - Standard wall -- Part 2: Single core cables
Superseded by EN 50264-2-1:2008
Bahnanwendungen - Kabel und Leitungen für Schienenfahrzeuge mit verbessertem Verhalten im Brandfall - Standard Isolierwanddicken -- Teil 2: Einadrige Leitungen
Applications ferroviaires - Câbles pour matériel roulant ferroviaire ayant des performances particulières de comportement au feu - Câbles à isolation d'épaisseur normale -- Partie 2: Câbles à un conducteur
Railway applications - Railway rolling stock cables having special fire performance - Standard wall - Part 2: Single core cables
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN 50264-2:2003
01-februar-2003
Railway applications - Railway rolling stock cables having special fire performance
- Standard wall - Part 2: Single core cables
Railway applications - Railway rolling stock cables having special fire performance -
Standard wall -- Part 2: Single core cables
Bahnanwendungen - Kabel und Leitungen für Schienenfahrzeuge mit verbessertem
Verhalten im Brandfall - Standard Isolierwanddicken -- Teil 2: Einadrige Leitungen
Applications ferroviaires - Câbles pour matériel roulant ferroviaire ayant des
performances particulières de comportement au feu - Câbles à isolation d'épaisseur
normale -- Partie 2: Câbles à un conducteur
Ta slovenski standard je istoveten z: EN 50264-2:2002
ICS:
13.220.20 3RåDUQD]DãþLWD Fire protection
29.060.20 Kabli Cables
45.060.01 Železniška vozila na splošno Railway rolling stock in
general
SIST EN 50264-2:2003 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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SIST EN 50264-2:2003
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SIST EN 50264-2:2003
EUROPEAN STANDARD EN 50264-2
NORME EUROPÉENNE
EUROPÄISCHE NORM August 2002
ICS 13.220.20; 29.060.20; 45.060.01
English version
Railway applications -
Railway rolling stock cables having special fire performance -
Standard wall
Part 2: Single core cables
Applications ferroviaires - Bahnanwendungen -
Câbles pour matériel roulant ferroviaire Kabel und Leitungen für Schienen-
ayant des performances particulières fahrzeuge mit verbessertem Verhalten
de comportement au feu - im Brandfall -
Câbles à isolation d'épaisseur normale Standard Isolierwanddicken
Partie 2: Câbles à un conducteur Teil 2: Einadrige Leitungen
This European Standard was approved by CENELEC on 2002-03-01. CENELEC members are bound to
comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this
European Standard the status of a national standard without any alteration.
Up-to-date lists and bibliographical references concerning such national standards may be obtained on
application to the Central Secretariat or to any CENELEC member.
This European Standard exists in three official versions (English, French, German). A version in any
other language made by translation under the responsibility of a CENELEC member into its own
language and notified to the Central Secretariat has the same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Czech Republic,
Denmark, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Luxembourg, Malta,
Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland and United Kingdom.
CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
Central Secretariat: rue de Stassart 35, B - 1050 Brussels
© 2002 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 50264-2:2002 E
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SIST EN 50264-2:2003
EN 50264-2:2002 - 2 -
Foreword
This European Standard was prepared for Technical Committee CENELEC TC 20 “Electric
cables” by Working Group 12 “Railway cables” as part of the overall programme of work in
CENELEC TC 9X “Electrical and electronic applications for railways”.
The text of the draft was submitted to the formal vote and was approved by CENELEC as
EN 50264-2 on 2002-03-01.
The following dates were fixed:
- latest date by which the EN has to be implemented
at national level by publication of an identical
national standard or by endorsement (dop) 2003-07-01
- latest date by which the national standards conflicting
with the EN have to be withdrawn (dow) 2008-07-01
Annexes designated ”normative” are part of the body of the standard.
Annexes designated “informative” are given for information only.
In this standard, annexes A and B are normative and annex C is informative.
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Contents
Page
Introduction .4
1 Scope.5
2 Normative references.5
3 Definitions .6
4 Rated voltage.7
5 Designation, marking and coding.7
6 Construction of cables .8
7 Tests .13
Annex A (normative) Thickness and overall diameter .22
Annex B (normative) Preparation of test pieces for physical tests .24
Annex C (informative) Guidance on selection of cables for type approval.25
Bibliography .26
Table 1 - General data - Cable type (0,6/1 kV unsheathed).11
Table 2 - General data - Cable type (1,8/3 kV unsheathed).12
Table 3 - General data - Cable type (1,8/3 kV sheathed).12
Table 4 - General data - Cable type (3,6/6 Kv sheathed).13
Table 5 - Schedule of tests for cables.20
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EN 50264-2:2002 - 4 -
Introduction
EN 50264 covers a range of cables with standard wall thickness of insulation, both
sheathed and unsheathed, based upon halogen free materials, for use in railway rolling
stock. It is divided into 3 parts:
Part 1: General requirements;
Part 2: Single core cables;
Part 3: Multicore cables.
Special test methods referred to in EN 50264 are given in EN 50305. A guide to use is
given in (EN 50355 – under development).
The cables in part 2 may also be used in part 3 of this series of standards to build up
multicore sheathed cables.
Part 1, General requirements, contains a more extensive introduction to EN 50264, and
should be read in conjunction with this part 2.
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1 Scope
Part 2 of EN 50264 specifies requirements for, and constructions and dimensions of, single
core cables of the following types and voltage ratings:
2 2
- 0,6/1 kV unscreened, unsheathed (1 mm to 400 mm );
2 2
- 1,8/3 kV unscreened, unsheathed (1,5 mm to 400 mm );
2 2
- 1,8/3 kV unscreened, sheathed (1,5 mm to 400 mm );
2 2
- 3,6/6 kV unscreened, sheathed (2,5 mm to 400 mm ).
All cables have class 5 tinned copper conductors to HD 383, halogen-free insulation and,
where applicable, halogen-free sheath. They are for use in railway rolling stock as fixed
wiring, or wiring where limited flexing in operation is encountered. The requirements provide
for a continuous conductor temperature not exceeding 90 °C and a maximum temperature
for short circuit conditions of 200 °C based on a duration of 5 seconds.
Under fire conditions the cables exhibit special performance characteristics in respect of
maximum permissible flame propagation (flame spread) and maximum permissible emission
of smoke and toxic gases. These requirements are specified to permit the cables to satisfy
hazard levels 2, 3 or 4 of EN 45545-1.
NOTE 1 Requirements for the emission of smoke, fumes and gases are not specified for Hazard Level 1 of
EN 45545-1.
NOTE 2 EN 45545-1 is still under development and should be consulted.
Part 2 of EN 50264 should be used in conjunction with part 1 “General requirements”.
2 Normative references
This European Standard incorporates by dated or undated reference, provisions from other
publications. These normative references are cited at the appropriate places in the text and
the publications are listed hereafter. For dated references, subsequent amendments to or
revisions of these references apply to this European Standard only when incorporated in it
by amendment or revision. For undated references the latest edition of the publication
referred to applies.
EN 10002-1 Tensile testing of metallic materials - method of test at ambient
temperature
1)
EN 45545-1 Railway applications - Fire protection on railway vehicles -
Part 1: General
EN 50264-1 Railway applications - Railway rolling stock cables having special fire
performance - Standard wall - Part 1: General Requirements
EN 50264-3 Railway applications - Railway rolling stock cables having special fire
performance - Standard wall - Part 3: Multicore cables
1)
at draft stage.
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SIST EN 50264-2:2003
EN 50264-2:2002 - 6 -
EN 50265-2-1 Common test methods for cables under fire conditions - Test for
resistance to vertical flame propagation for a single insulated conductor
or cable - Part 2-1: Procedures - 1kW pre-mixed flame
EN 50266-2-4 Common test methods for cables under fire conditions - Test for vertical
flame spread of vertically-mounted bunched wires or cables -
Part 2-4: Procedures - Category C
EN 50267-2-1 Common test methods for cables under fire conditions - Tests on gases
evolved during combustion of materials from cables -
Part 2-1: Procedures – Determination of the amount of halogen acid
gas
EN 50267-2-2 Common test methods for cables under fire conditions - Tests on gases
evolved during combustion of materials from cables -
Part 2-2: Procedures - Determination of degree of acidity of gases for
materials by measuring pH and conductivity
EN 50268-2 Common test methods for cables under fire conditions - Measurement
of smoke density of cables burning under defined conditions -
Part 2: Procedure
EN 50305 Railway applications - Railway rolling stock cables having special fire
performance - Test methods
EN 50334 Marking by inscription for the identification of cores of electric cables
EN 60684-2 Flexible insulating sleeving - Part 2 Methods of test
EN 60811-1-1 Insulating and sheathing materials of electric and optical cables -
Common test methods - Part 1-1: General application – Measurement
of thickness and overall dimensions - Tests for determining the
mechanical properties
EN 60811-1-2 Insulating and sheathing materials of electric cables - Common test
methods - Part 1-2: General application - Thermal ageing methods
EN 60811-1-3 Insulating and sheathing materials of electric cables – Common test
methods - Part 1-3: General application - Methods for determining the
density - Water absorption tests - Shrinkage test
EN 60811-1-4 Insulating and sheathing materials of electric cables – Common test
methods - Part 1-4: General application - Tests at low temperature
EN 60811-2-1 Insulating and sheathing materials of electric and optical cables –
Common test methods - Part 2-1: Methods specific to elastomeric
compounds - Ozone resistance, hot set and mineral oil immersion tests
HD 308 Identification of cores in cables and flexible cords
HD 383 Conductors of insulated cables - First supplement: Guide to the
dimensional limits of circular conductors
3 Definitions
For the purposes of this standard the definitions given in EN 50264-1 apply.
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4 Rated voltage
The rated voltage for single-core insulated cables shall be as follows:
a) unsheathed: 0,6/1 kV; 1,8/3 kV;
b) sheathed: 1,8/3 kV; 3,6/6 kV.
5 Designation, marking and coding
5.1 Code Designation
For the purpose of supplying cables to this standard, the following code designation shall
be used:
EN reference, number of cores and conductor size, identifier for the particular hazard level
(see 5.2)
For example:
EN 50264 1 x 1,5 F
5.2 Code identities for cables suitable for use in particular hazard levels
The following letters shall be used as a code to identify the suitability of a particular cable
for use under one of the Hazard Levels of EN 45545-1, and to indicate performance levels
relating to low temperature and to oil and fuel resistance.
Hazard level EN 45545-1 HL1 HL2 or HL4
HL3
Low temperature/Oil resistance A B C
Extra low temperature/ Oil resistance D E F
Low temperature/ Extra oil and fuel resistance G H J
Extra low temperature/ Extra oil and fuel KL M
resistance
5.3 Marking of cable
Cables shall be marked with the following:
- manufacturer’s name;
- EN reference;
- voltage rating (U );
o
- conductor size;
- identifier for the particular hazard level (see 5.2).
For example:
XYZ EN 50264-2 3 600 V 400 F
The marking shall conform to the requirements of clause 5 of EN 50264-1.
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EN 50264-2:2002 - 8 -
5.4 Core identification
5.4.1 Single core cables
The core insulation of all cables shall be black unless otherwise specified. If a colour other
than black is specified it shall be a colour in accordance with HD 308.
The colour shall be clearly identifiable and durable. Durability shall be checked by the test
given in 10.1 of EN 50305.
Conformity with these requirements shall be verified by visual examination.
5.4.2 Multicore cables
Cores complying with EN 50264-2 may be used as components of multicore cables, e.g. in
EN 50264-3. In such cases, the identification of the individual core in a cable, except the
earthing conductor, shall be by printed number or colour.
The number shall be printed in a colour which contrasts with the core colour.
The marking by numbers shall conform to EN 50334, unless otherwise specified, and
conformity shall be by visual examination and measurement.
5.5 Sheath
The sheath shall be black unless otherwise specified.
6 Construction of cables
6.1 General
The cable shall conform to the applicable general requirements given in EN 50264-1, and to
the specific requirements of this part.
Conformity with the requirements shall be checked by inspection and by the tests given in
Table 5.
The cable dimensions shall be as given in Tables 1 to 4 as appropriate to the cable type.
6.2 Conductor
Conductors shall be tin-coated annealed copper, class 5, according to HD 383.
When tested in accordance with EN 10002-1 the minimum average elongation of the wires
from the conductor shall be 15 %, with a minimum value of 10 % for any individual wire.
NOTE It is not necessary to test all individual wires. 5% of wires or 10 wires, whichever is the fewer, should be
selected at random.
6.3 Conductor screening
For cables in Table 4, conductor screening shall be as given in 6.1.6 of EN 50264-1.
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6.4 Separator
6.4.1 A separator may be used over the conductor if the cable construction does not
include a conductor screen.
6.4.2 A separator may be included by the manufacturer between the insulation and
sheath.
6.5 Insulation system
The insulation shall be one or more extruded materials as defined in EN 50264-1 applied so
as to meet the requirements of EI 101 to EI 105.
Type EI 101 to 104 for single-core unsheathed, sheathed and also multicore cable:
– EI 101 low temperature resistant, oil resistant;
– EI 102 extra low temperature resistant, oil resistant;
– EI 103 low temperature resistant, extra oil and fuel resistant;
– EI 104 extra low temperature resistant, extra oil and fuel resistant.
Type EI 105 only for sheathed cables.
NOTE 1 Category EI 105 material is not oil or fuel resistant.
NOTE 2 To claim extra low temperature performance both insulation and sheath shall be extra low temperature
resistant.
The insulation shall be applied to meet the requirements of 6.2 of EN 50264-1.
The insulation thickness shall conform to the specified value given in Tables 1 to 4.
6.6 Sheath
The sheath shall be an extruded material as defined in EN 50264-1 applied so as to meet
the requirements of compound type EM 101, EM 102, EM 103 or EM 104:
– EM 101 low temperature resistant, oil resistant;
– EM 102 extra low temperature resistant, oil resistant;
– EM 103 low temperature resistant, extra oil and fuel resistant;
– EM 104 extra low temperature resistant, extra oil and fuel resistant.
The sheath shall consist of one extruded layer.
The sheath shall be applied to meet the requirements of 6.6.2 of EN 50264-1.
The sheath thickness shall conform to the specified value given in Tables 3 and 4.
6.7 Metallic screening braid
NOTE At present the use of metallic braid screen is not specified for cables to EN 50264-2.
Where a metallic screening braid is specified it shall consist of tin coated, annealed copper
wires. There shall be no more than one splice in any spindle of the braid over any 10 cm
length of the braid. The braid shall be applied evenly, it should neither slip nor leave a
permanent imprint in the insulation.
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EN 50264-2:2002 - 10 -
The filling factor Kr shall be according to the formula:
05,
22
� �
m.n.d ��
Kr�� 1�
� �
2
2�� L
� �
The lay angle (the angle of a braid wire and the centreline of the core) shall be between 15°
and 35°.
2 2
� �
� �
1,072 � 1� �1,490
� �
2
L
� �
� = diameter of the core under the braid + 2d
d = nominal diameter of a wire
m = total number of bundles
n = number of wires per bundle
L = braiding pitch
The diameters of the wires of the braid shall be a minimum of 0,12 mm diameter such that
the filling factor is 0,55 minimum.
6.8 Constructional components
6.8.1 Unsheathed cable (Tables 1 and 2 - 0,6/1kV and 1,8/3 kV)
Cables in Tables 1 and 2 shall be composed of the following components in the order given:
- conductor flexible tin coated annealed copper, class 5
- separator (optional) at the discretion of the manufacturer
- insulation a compound or compounds given in 6.5.
6.8.2 Sheathed cable (Table 3 - 1,8/3kV)
Cables in Table 3 shall be composed of the following components in the order given:
- conductor flexible tin coated annealed copper, class 5
- separator (optional) at the discretion of the manufacturer
- insulation a compound or compounds given in 6.5
- separator (optional) at the discretion of the manufacturer
- sheath a compound given in 6.6.
6.8.3 Screened sheathed cable (Table 4 - 3,6/6kV)
Cables in Table 4 shall be composed of the following components in the order given:
- conductor flexible tin coated annealed copper, class 5
- conductor screening as given in 6.1.6 of EN 50264-1
- insulation a compound or compounds given in 6.5
- separator (optional) at the discretion of the manufacturer
- sheath a compound given in 6.6.
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Table 1 - General data - Cable type (0,6/1 kV unsheathed)
a
12 34 5 6 7 8 1
Nominal Conductor Mean Overall diameter Resistance Insulation Insulation Nominal
cross- diameter thickness of of resistance resistance cross-
sectional insulation conductor at 20 °C at 90 °C sectional
area d D at 20 °C area
min. min. max. max. min. min.
2 2
mm mm mm mm mm �/km M�.km M�.km mm
1,0 1,25 0,8 2,8 3,2 20 65 0,65 1,0
1,5 1,5 0,8 3,0 3,5 13,7 55 0,55 1,5
2,5 1,95 0,8 3,4 3,9 8,21 50 0,5 2,5
4,0 2,5 0,8 3,9 4,6 5,09 40 0,4 4
6,0 3,0 0,9 4,6 5,4 3,39 35 0,35 6
10 3,9 1,1 5,8 6,8 1,95 30 0,3 10
16 5,0 1,1 7,2 8,5 1,24 30 0,3 16
25 6,4 1,3 8,6 10,0 0,795 30 0,3 25
35 7,7 1,3 10,2 11,5 0,565 25 0,25 35
50 9,2 1,5 11,6 13,5 0,393 25 0,25 50
70 11,0 1,5 13,3 15,5 0,277 20 0,2 70
95 12,5 1,6 14,9 17,4 0,210 20 0,2 95
120 14,2 1,6 16,5 19,3 0,164 20 0,2 120
150 15,8 1,9 18,5 21,7 0,132 15 0,15 150
185 17,5 1,9 20,1 23,6 0,108 15 0,15 185
240 20,1 2,1 22,9 26,8 0,0817 15 0,15 240
300 22,5 2,2 25,4 29,7 0,0654 10 0,1 300
400 25,8 2,3 28,7 33,6 0,0495 10 0,1 400
a
For information, indicative only.
Table 2 - General dat
...
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